Wheel.



L. H. PERUVIAN.

WHEEL.

APPLICATION FILED MAR. 16. 1909.

1,2%,1 38. Patented Nov. 28, 1916.

2 SHEETS-SHEET I.

gij. 52j. f5. I# 4' L. H. PEHLMAN.

WHEEL.

- APPLICATION FILED MAR. IG, |909.

1,206,1 38. Patented Nov. 28, 1916 2 SHEETS-SHEET 2.

11 3 f1/9 V7 l Il 1 FI l".

UNITED STATES 'PATENT oFFron.

LOUIS H. PERLMAN, NEW OB,K, N; Y.

WHEEL.

Speeicaton of Letters Patent. Patted NQV. 28, 1916.

Application led March 16, 1909. Serial No. 483,815.

To au whom z't may concern: Y

' Be it known that I, Louis H. PERLMA'N, a citizen of the United States, residing at New York, in the county of New York and State lof New York, have invented certain new and useful Improvements in Wheels; and I do hereby declare the following to be a f ull, clear, and exact description of the inventlon', such as will enable others .skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in wheels of the -`demountable rim type, and more particularly to means for enabling and facilitating quick and ready application of the demountable rim to and removal thereof from the fixed rim of a wheel while car rying avshoe either in an inflated or deiiated condition.

An object in view is the provision, when the demountable rim is on the ixedrim, of

a continuous circumferential contact lbetween inafter disclosed and claimed'.

In the accompanying drawing, Figure 1 is a perspective view o a wheel illustrating an embodiment of the invention, the de- Y.mountable rim being removed. Fig. 2 is a,-

" similar view of the demountable rim detached. Fig. 3 is an edge view of the parts seen in Fig. 1. Fig. 4 isa transverse sec` tiontaken approximately on the p lane indicated by line 4, 4 of Fig. 2. Fig.. 5 1 s a fragmentary cross-sectional perspective vlew through the parts assembled. Fig. 5l1 is a similar cross section. Fig. 5b is a vertical ction on the line 5, 5b of Fig. 5*. Fig. 6 1s a detail view of therim shifting tool. Figs. 7 and 8' are similar views respectively to Figs. 3 and 4 of a modilied embodiment. Figs. 9 and 10 lare edge views of a modified embodiment of the wheel and demountable rim respectively, parts beingbroken away in Fig. 10.v Figs. 11 and12 are similar views of a further embodiment. Figs. 13 and 14 are detail fragmentary sections respectively illustrating the terminal ends of the respective rims. Fig. 155s a transverse, vertical section through /a modied arrangement showin the -reverse relation ofthe male and fema e threads.'

Referring to the drawings by numerals,

1 indicates a wheel having the usual wood felly 2 and' fixed rim 3, the latter being transversely flat and having a smooth outer In practice, the rim 5 fits snugly upon andhas a bearing contact with the periphery of rim 3 throughoutthe circumference thereof, and the inner face of rim 5 is transversely flat and smooth,'except for male threads.' 6, y

6, corresponding to threads 4, 4, and 'adapted when the parts are assembled to lie therein. The rim 5 is adapted to be applied to the rim 3, by being caused to approach the same bodily laterally until the-beginning ends ofl threads 6 are in position to enter threads 4, whereupon rim 5 is' given a one-half rotation, the Wheel 1 and rim 3 being hel'd against movement by the brake or otherwise,

As the rotation is beingcomplcted the rim 5 will be moved laterally upon rim 3, and when entirely thereon will firmly engage the same at all points. Threadsv 5 and 6 may be of any type preferred, lout` preferably increase in width from their beginning end to their terminal end, that is to say, each thread tapers from its terminal to its point of beginning, so that the'threading action may be easily and freely accomplished 'with no 'binding of the parts until the rim 'is in place, and then the snug fit of the threads forms a lock against further onward rotation. Obviously, in'operation the wheel will be set for causing the drive to tend yto thread the rim 5 farther on rim 3, and liability of separatiton of the rims is thusobviated, except in backing. 'l

Itis to be noted that the threads form -.a

Y be secured by means of lugs' passed through apertures in rim 5" and suitably swaged. Blocks 7 and 8 are .apertured at 9, and when the vrim?) isin the proper' position on 'the rim 3, the apertures 9 register, and a bolt 9 is passed vtherethrough which -eiectually vprevents indepenentrotary movement ofthe rims. Of course, 'as many pairs of blocks 7 and 8 may be provided as-desired, but as there is only a minimum strain to be taken up one pair will usually be sucient.

Usually in the assembling of the rims, the rim 5 will be readily and easily moved `up to the dna-l position, but owing to heating of rim 3 or from other cause if the final movement is found to require more torce thanmay readily be applied by the hands of the operator, an instrument 12, as

illustrated in Fig. 6, may be utilized.' A lus or projection 10 is formed at the out si e of rinr 5; and a corresponding lug 11 similarly projects from the rim 3, and the in applying rim 5 when extra fr required to bring the blocks 7 and 8 into, position, applies hook 13 of instrument 12 to lug 10, and hook 14 to lug 11, and lifts upwardly on'the handle 1.5, the pivoted arm carrying'- the hook 14 being thus caused t0 approach the main or lever portion ofl the instrument, and hooks 13 and 14 -with the lugs engaged thereby being forced closer together until apertures 9 are in alinement. If in taking off the rim 5 extra force is required, the outer hooks 13 and 1li are respectively applied to the lugs 10 and 11, and handle 15 is depressed,

3 anda I propose to provide L-brackets 16 riveted or otherwise suitably secured on the inner an inverse arrangement is clearly compre-l hended within the scope of the invention as indicated in Fig. 15, in which 2 is the feIly, 3 the lixed rim, 5 the demountable rim, and 6 the male thread vengaging female thread 4".

against any lateral movement of one with respect to the other, and it is therefore I obvious that instead of the tapered thread,

bolt 9 having been previously removed, and.

thus the rim 5r is started off. lVhen once started, the remaining movement required for removal of the rim will be free, and readily accomplished manually. Obviously the rim 5 may be of any construction desired so far as its connection with a shoe is concerned, except thatfthe'side valve must be employed, andI preferably provide for a detachable connect-ion of the shoe with the rim, vfor instance, afterthe principle set forth in my co-pending application Serial No. 324,015, filed `.lune 29, 1906.

lWhile it is obvious that the rim 3 cannot move inwardly beyondthe limitl allowed by the tapered thread, `as en extra precaution I may utilize a straight thread, as seen at 17 and 18-in Figs. 7 and 8. y

In Figs. 9 and 10 I have illustrated another obviousarrangement of the same invention, which consists in providingcOntinuous threads 19 and 2O respectively on the fixed and demountable rims, the thread extending longitudinally and circumferentially of the respective part and beingv tapered if desired as indicated. The continuaus formation of the thread may furthermore be of the ordinary type of thread instead 'of being tapered, as indicated at 21 and 22 respectively' of the fixed and demountable rims seen in Figs. 11 and 12.

As indicated in Fig. 13, at e', the thread LLas it approaches its terminal end is preferably tapered outwardly, that is with respect to its thickness, this taper being additional to the longitudinal taper with respect to the width of the thread. The thread 6, as indicated at 6, correspondingly vtapers in thickness in addition to the longitudinal taper as to its width, so that as the terminal or smaller end of the male thread approaches the corresponding end of the female thread, the parts will it snugly togetherA and wedge tightly in place, and at the same time it will be observed that the smaller end of the male thread will move easily and freely'throughout the larger portions of the female thread, so that the thread action in applying the demountable rim to the fixed rim will be' a' complished with but a minimum amount of friction. l

That I claimisf- 1. In a wheel, the combination of a fixed rim,.a rim designed to be detachably mounted thereon, and a thread connection between the rims, the terminal end of the female thread being tapered with respect' to depth and the entering end of the male thread being correspondingly tapered.

2. In a wheel, the combination of a fixed rim, a rim designed to be detachably mounted thereon, and a thread connection between the detachable rim and. fixed rim, tapering longitudinally with respect to its width and and the female threadccrrespondingly tapering With respect to its thickness at its terminal end.

In testimony whereof I aix my signature in presence of two Witnesses.

LOUIS H. PERLMAN Witnesses:

JOHN E. BRoDsKY, C. S. TRECARTIN. 

